Re: question about nullptr

On 2024-07-09, Thiago Adams <thiago.adams@gmail.com> wrote:

On 09/07/2024 08:32, Tim Rentsch wrote:

Any use of '\0' almost always strikes me as an affectation.  It's
like people want to somehow pretend that it's not the same as
just 0.

>
I like to pretend
>
'\0'   is not int

In C++ it isn't.

  void foo(int);
  void foo(char);

  foo(0);       // takes int overload
  foo('\0');    // takes char overload

I don't like to think '\0' is null pointer.

I don't like that 1 - 1 is a null pointer. It's not a good design.

Nobody other than C humorists needs any zero-valued integer expression
whatsoever to be a null pointer constant.

How it should work is that only the token 0 is a null pointer constant.
Not 0L (ideally, not even 00 or 0x0, only the decimal token).

All zero-valued constant expressions of integer type should not be
null pointer constants, but ordinary expressions whch require
a cast to be converted to pointer type, and denote an address
associated with zero that may be different from the null pointer.


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